IE3-IE4 series three-phase asynchronous motors meet the efficiency standards specified in GB 18613-2012 "Energy efficiency limit values and energy efficiency grades for small and medium-sized three-phase asynchronous motors". At the same time, IE1-IE4 meet the efficiency grades of IEC 60034-30-1: 2014. The installation dimensions of IE1-IE4 series motors meet the IEC 60034 standard. They have the advantages of reasonable structure, beautiful appearance, high efficiency, low noise, high protection level and insulation level, etc. They can be widely used in fans, water pumps, machine tools, compressors and transportation machinery to drive various general mechanical equipment, and can also be used in other places with relatively harsh environments such as petroleum, chemical, steel, mining, etc.